yeh it didn't mention which was more powerful, but I think God is very kind and not spiteful, hence he would never want to kill Samar as Meera loved him!!
The movie didn't talk about who is more powerful. It was never about who is more powerful. Samar and Meera were meant to be. Now you could say that its what God wanted or maybe maybe it was saying that even God couldn't come in the way of true love.
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